| commit | 5d8a50d58cdc4d9c998ffb6995339537ba992b8f | [log] [tgz] |
|---|---|---|
| author | Rui Ueyama <ruiu@google.com> | Tue Oct 09 21:41:53 2018 +0000 |
| committer | Rui Ueyama <ruiu@google.com> | Tue Oct 09 21:41:53 2018 +0000 |
| tree | b618bf7e0fa22657a6ae4c420a8ba5b88e376ceb | |
| parent | caf1f0853a3666dd3843497478694ed4b94dbf2c [diff] |
Attempt to fix ubsan.
Previously, we cast a pointer to Elf{32,64}_Chdr like this
auto *Hdr = reinterpret_cast<const ELF64_Chdr>(Ptr);
and read from its members like this
read32(&Hdr->ch_size);
I was thinking that this does not violate alignment requirement,
since &Hdr->ch_size doesn't really access memory, but seems like
it is a violation in terms of C++ spec (?)
In this patch, I use a different struct that allows unaligned access.
git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@344083 91177308-0d34-0410-b5e6-96231b3b80d8
This directory and its subdirectories contain source code for the LLVM Linker, a modular cross platform linker which is built as part of the LLVM compiler infrastructure project.
lld is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt.
In order to make sure various developers can evaluate patches over the same tests, we create a collection of self contained programs.
It is hosted at https://s3-us-west-2.amazonaws.com/linker-tests/lld-speed-test.tar.xz
The current sha256 is 10eec685463d5a8bbf08d77f4ca96282161d396c65bd97dc99dbde644a31610f.